Sonata No. 4, Op. 60 - Piano Solo

Hinted at in his 2nd sonata and developed in the 3rd, Kapustin's 4th sonata is an exercise in expanded tonality. This comprises the idea of a composition revolving around a twelve-tone, rather than a traditional 8 tone scale. There is a lesser sense of major and minor key and less of a distinction between diatonic and chromatic figuration. Like all his other compositions the Sonata is heavily influenced by jazz idioms, and the whole work gives the impression of being an exercise in imporvised, progressive jazz.